1200445113100 has 144 divisors (see below), whose sum is σ = 2685518115840. Its totient is φ = 465488396800.

The previous prime is 1200445113083. The next prime is 1200445113137. The reversal of 1200445113100 is 13115440021.

It is a super-2 number, since 2×1200445113100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 575200257 + ... + 575202343.

It is an arithmetic number, because the mean of its divisors is an integer number (18649431360).

Almost surely, 2^{1200445113100} is an apocalyptic number.

1200445113100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200445113100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342759057920).

1200445113100 is an abundant number, since it is smaller than the sum of its proper divisors (1485073002740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200445113100 is a wasteful number, since it uses less digits than its factorization.

1200445113100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968 (or 2961 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The spelling of 1200445113100 in words is "one trillion, two hundred billion, four hundred forty-five million, one hundred thirteen thousand, one hundred".